单双击响应事件处理区分

使用Gesture Recognizer

使用Gesture Recognizer识别就会简单许多，只需添加两个手势识别器，分别检测单击和双击事件，设置必要的属性即可。

view plaincopy

- (id)init {

if ((self = [super init])) {

self.userInteractionEnabled = YES;

UITapGestureRecognizer *singleTapGesture = [[UITapGestureRecognizer alloc]initWithTarget:self action:@selector(handleSingleTap:)];

singleTapGesture.numberOfTapsRequired = 1;

singleTapGesture.numberOfTouchesRequired = 1;

[self addGestureRecognizer:singleTapGesture];

UITapGestureRecognizer *doubleTapGesture = [[UITapGestureRecognizer alloc]initWithTarget:self action:@selector(handleDoubleTap:)];

doubleTapGesture.numberOfTapsRequired = 2;

doubleTapGesture.numberOfTouchesRequired = 1;

[self addGestureRecognizer:doubleTapGesture];

[singleTapGesture requireGestureRecognizerToFail:doubleTapGesture];

}

return self;

}

-(void)handleSingleTap:(UIGestureRecognizer *)sender{

CGPoint touchPoint = [sender locationInView:self];

//...

}

-(void)handleDoubleTap:(UIGestureRecognizer *)sender{

CGPoint touchPoint = [sender locationInView:self];

//...

}

唯一需要注意的是

[objc] view plaincopy

[singleTapGesture requireGestureRecognizerToFail:doubleTapGesture];

这句话的意思时，只有当doubleTapGesture识别失败的时候(即识别出这不是双击操作)，singleTapGesture才能开始识别，同我们一开始讲的是同一个问题。

转自：http://www.winddisk.com/2012/10/17/detect_double_tap_single_tap/